How much is too much for a safe daily Vitamin A intake for healthy people?

Answer 1

I believe 5000 IU is standard RDA, over that is too much.

On vitamin labels it will say how much is in the pill and what percentage RDA (recommended daily allowance) it is. You also have to take into account how much vitamin A you receive from your diet, so that the additon of the vitamin doesn't add up to an overdose.

With vitamin A and D, you do not want to take over the RDA, because these are oil based vitamins and your body will store them and not flush them out as rapidly as water based vitamins (B and C). An overdose can be harmful. There are documented cases of deaths occurring from too much vitamins A and D, such as well meaning parents giving their children too much cod liver oil.

Beta carotene, the source of vitamin A, is a different story. The body will convert beta carotene into vitamin A as it needs it, and is less potentially harmful, from what I understand.

Answer 2

about 90mg is recommended for men however, vitamin c is water soluble. so whatever your body doesn't use it will get rid of. but also keep in mind: How much is too much? The report also includes the newly calculated figures for the "tolerable upper intake level" for vitamin C -- the highest level of daily intake that is likely to pose no risk of adverse health effects to the general adult population aged 18 years an older. For vitamin C this is estimated at 2,000 mg for adults; 400 mg for children ages 1-3 years; 650 mg for children ages 9-13 years, and 1800 mg for young adults aged 14-18 years old. As intake increases above this level, the risk of adverse effects increases

Answer 3

Fish oil builds up in your body and you can take too much. Beta Carotene does not.

Answer 4

Don't overdo it. At high levels, it is very toxic.

900 mcg men's RDA
700 mcg women's RDA.
upper safe limit 3,000 mcg